Quiz Hard 2 Categories Quizzes 0 Quiz Hard 2 1 / 30 What is the function of Head Box in paper making machine? It dry the paper It makes the surface of paper smooth It makes paper thin It discharge the pulp at the creen of Fourdrmer table it reduces thickness of paper 2 / 30 Which of the following substance has been advocated as fuel of future? H2 O2 H2O N2 CH4 3 / 30 Hydrolysis of strach with enzyme analysis produces Dextrins Glucose Maltose All of these 4 / 30 The nitrogen present in some fertilizers helps plants to produce fat to undergo photosynthesis to produce lipids to fight against diseases to produce protein 5 / 30 Among the elements of second period, the element with highest melting point belongs to group 18 1 17 14 6 / 30 Which of the following is not a ligand or complexing agent? NH3 CN- EDTA Dithizone CH3COOH 7 / 30 The study of ciled long peptide chains of protien to give 3-dimensional structure is study of Quaternary structure Primary structure Secondary structure Tertiary structure 8 / 30 Moat effective pesticide is None All of these Organophosphatea organochlorinea carbamates 9 / 30 Glucose and mannose may be obtained by KIlani synthesis from D-arabinose D-lyxose D-xylose D-ribose 10 / 30 H2SO4 is manufactured b y The lead chamber process The Ostwald's process both a and b The contact process 11 / 30 Which of the following disaccharide is non reducing sugar Maltase Sucrose Maltose Lactose 12 / 30 magnesium burns in air to give both a and c Mg3N2 MgCO3 MgO 13 / 30 Pick out the incorrect statement for transition metals 5d-elements have higher energies than 3d or 4d elements They form interstitial compounds Zr and Hf have almost identical atomic and ionic radii They have low melting and boiling point. (or low enthalpies atomization) 14 / 30 The science of all the relations of all the organisms to their environment is called Botany Ecology Archilogy enviromemntal chemistry Biology 15 / 30 O2 molecule is Ferromagnetic Diamagnetic Paramagnetic Ferrmagnetic 16 / 30 The ionic product equilibirium contant is Kc Kw Ka Kb 17 / 30 Which of the following has the highest melting point? KCl LiCl RbCl NaCl 18 / 30 steel cannot qualify for stainless prefix until it has at least how many percent of chromium? 0.1 0.3 0.05 0.2 0.25 19 / 30 The first noble gas compound was Xe+[PtF6]- XeF6 XeO3 XeF4 20 / 30 Noble gases are sparingly soluble in water owing to induced dipole - instantaneous dipole interaction dipole-induced dipole interactions Dipole-dipole interactions hydrogen bonding 21 / 30 Though Fructose is laevorotatory yet its name is written as D-fructose,this "D" prefix indicates Specific rotation Mutarotation Generic relationship with d-glyceraldehyde Generic relationship with d-glucose 22 / 30 The common oxidation state of lanthanides is? 3 4 2 1 23 / 30 Select an acidic amino acid Lysine Cystine Amino acetic acid Aspartic acid 24 / 30 According to Usanovich concept a base is defined as any species Neautrilization an acid to give a salt all these Combining with cations Capable of giving up amount 25 / 30 Perdisulphuric acid is Marshal acid Caro acid none any of them 26 / 30 Which one of the following statements is not Transition metals form complexes Transition metals form alloys Zn, Cd and Hg are transition metals K2[PtCl6] is a well known compound, but corresponding nikel compound is not known. 27 / 30 The one in which the acceptor atom is of low positive charge. large size and has several outer electrons which can be easily excited is a soft acid hard acid hard base soft base 28 / 30 All the strong acids have very close pka value and they appear to have nearly equal strengths in aqueous solutions. The phenomenon is called as Differentiating effect Levelling effect Differentiating solvent Levelling solvent 29 / 30 What group of steels are molybdenum high-speed steels? Group A Group T Group D Group F Group O 30 / 30 Which of the following carbonates decomposes at the highest temperature SrCO3 MgCO3 CaCO3 BaCO3 Your score is Share: Quiz Dad Previous post Quiz Hard 1 October 1, 2022 Next post Quiz Hard 3 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 3 1 October, 2022
